Readability Checker: Make Your Writing Clear and Easy to Read
Long sentences and passive voice make people stop reading. Check your text's Flesch reading ease, grade level, long sentences and passive voice hints.
Open the free Readability Score Checker →What is the Readability Score Checker?
Flesch reading ease, grade level, long sentences and passive voice hints for your writing. It's completely free, needs no sign-up and works on any phone or computer.

Why it's helpful
- Reading ease and grade level scores
- Highlights long sentences
- Passive voice hints
Who it's for
Writers, students, marketers and anyone writing for the web.
How to use it
- Paste your text. Aim for a reading ease of 60+ for websites.
💻 Open source: this tool is free and open source (MIT License). View the code on GitHub, download it and run it offline.
The bigger picture: Text
Writing is everywhere: posts, emails, essays and product pages. Simple text tools help you hit length limits, clean up content and write more clearly.
What's changing: With AI drafting more text, editing tools that check clarity, length and tone are becoming the final quality step.
Frequently asked questions
What is Flesch reading ease?
A 0–100 score from sentence and word length. Higher means easier to read.



